Flat A, 78 Onslow Gardens, Hornsey, London, N10 3JX

1. 28 Aug 2026

   Received by Haringey

2. 10 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 23 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Haringey took a median of 55 days over the applications it decided in the last year.

This application is with Haringey for determination, against a statutory target of eight weeks. Over the last year Haringey decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 74 Onslow Gardens, Hornsey, London, N10 3JX

  HGY/2025/2434 Submitted 16 Sep 2025 50 yards away

  Demolition of existing rear extension and replacement with rear and side infill extension, new rear patio, flat roof dormer window to front roof slope, replacement of exiting timber casement windows and front entrance door.

  Granted Householder Extension Loft or dormer +2 26 docs
  Domestic

• 56 Onslow Gardens, Hornsey, London, N10 3JX

  HGY/2023/0958 Submitted 4 Apr 2023 50 yards away

  Proposed single-storey rear extension including the replacement of all the existing windows at ground floor level.

  Granted Householder Extension Windows or glazing 15 docs
  Small domestic

• 65 Onslow Gardens, Hornsey, London, N10 3JY

  HGY/2024/3036 Submitted 4 Dec 2024 50 yards away

  Non-material amendment to planning application ref: HGY/2024/1585 to reposition the replacement window on the rear elevation and addition of a side window.

  Granted Amendments Windows or glazing 8 docs

• 65 Onslow Gardens, Hornsey, London, N10 3JY

  HGY/2024/3054 Submitted 4 Dec 2024 50 yards away

  Non-material amendment to planning application ref: HGY/2024/1081 to alter rooflights of rear extension, reposition of rear window and removal of a side elevation door.

  Granted Amendments Extension Loft or dormer +1 10 docs

• Ground Floor Flat, 72 Woodland Gardens, Hornsey, London, N10 3UA

  HGY/2023/0721 Submitted 14 Mar 2023 100 yards away

  Alterations to existing rear extension, roof light with new external windows

  Granted Full applications Extension Loft or dormer +1 17 docs

• 36 Woodland Gardens, Hornsey, London, N10 3UA

  HGY/2024/2736 Submitted 4 Oct 2024 100 yards away

  Replacement of existing single storey conservatory with glazed ground floor rear extension; enlargement of garden shed to incorporate enclosure for an air source heat pump; changes to rear garden landscaping.

  Granted Householder Extension Windows or glazing 14 docs
  Small domestic

• HGY/2026/1799 Awaiting decision

  14 Kingsley Place, Hornsey, London, N6 5EA

  The installation of 20 x 460W solar panels on the flat roof of 14 Kingsley Place, together with the routing of external heat-pump pipework over the flat roof.

  Received 8 Oct, published by the council 11 Oct 2026 Householder
• HGY/2026/1048 Granted

  18 Muswell Avenue, Hornsey, London, N10 2EG

  Erection of a single storey lower ground floor rear extension with roof terrace and associated landscaping works, insertion of rear ground floor door to proposed terrace, alterations and replacement of rear dormer glazing and first floor rear window, and alterations to front garage door and lower ground window.

  Received 15 May, published by the council 24 Jul 2026 Householder
• HGY/2026/2213 Awaiting decision

  2 Parkwood Mews, Hornsey, London, N6 5UR

  Convert the basement into a basement flat (retrospective application).

  Received 5 Oct, published by the council 11 Oct 2026 Householder
• HGY/2026/2541 Awaiting decision

  132 Vartry Road, Tottenham, London, N15 6HA

  Erection of a single storey rear/side extension, together with the installation of a Sukkah roof

  Received 5 Oct, published by the council 11 Oct 2026 Householder
• HGY/2026/2240 Granted

  40 Cholmeley Park, Hornsey, London, N6 5ER

  Installation of a new painted timber sash window to the existing side dormer on the north elevation of the property at second floor level.

  Received 10 Aug, published by the council 31 Aug 2026 Householder